I would tell them to check up with Snopes before embarrassing themselves with blatantly false information - ie, http://www.snopes.com/racial/business/kosher.asp - but really, why bother? They are after all Stormcunts and probably think Snopes is part of the Big Nasty Liberal Muslim Gay Black Jewish Conspiracy™.

Well, maybe Uncle Cletus' Authentic Kountry Bacon Beer isn't kosher. But beer and hard liquor is almost universally kosher with or without mark, because it's made with grain, which requires no special treatment.

The only case in which alcohol may not be kosher is wine (and maybe grappa). The Orthodox require special supervision and production of wine.

As for the OP, I would never presume to convince a Nazi that anything having to do with Jews is OK, but paying for kosher certification is a business decision, just like using real sugar instead of corn syrup, or producing "organic" products. It has an effect on the cost of production, which the producers justify to expand the size of their market.

If you don't like it, don't buy it. It's not a tax. No one is forcing food producers to produce kosher products, and no one is holding a gun to your head to buy kosher.

@ ArmandT: No, they are very different. Halal is clearly derived from kashrut in the eschewing of pork and the slaughtering of meat, but is otherwise much less restrictive; seafood, for example, is allowed by halal. The only area where Muslim dietary laws are more restrictive than Jewish laws is in the ban on alcohol. Not a feature of Judaism; Jews enjoy a glass of wine with their Shabbes feast. (As in The Last Supper).

MOST beer is kosher MOST of the time. There are certain beers that the orthodox require certification on (such as flavored beer), and ALL beer is non-kosher during passover due to the prohibition on leavening. But, this has nothing to do with alcohol, as, like you said, apart from wine, there are no particular rules against alcohol. Tequila, for instance, is kosher all year around!